PDi have been engaged by Spirit Energy (formerly Centrica) to support the A-Fields Late Life Strategy and Decommissioning Project.

This work scope initially considered placing A-fields into lighthouse mode but this was discounted as a viable option during the option screening process and it was decided that A-fields would be fully decommissioned in a single campaign.
Providing a multi-discipline team, PDi’s support has and continues to include Front end and regulatory support taking the project from concept through to execution.

Front End:
• Liability Estimates
• Option selection studies to develop most suitable options and cost modelling
• Scheduling and Methodology for facilities decommissioning
• Support in transition of duty holder
• Safety case modification.

Regulatory:
• Inventory / data gathering and validation
• Survey and analysis
• Decommissioning Programme development
• Engineering support activities in preparation for Comparative Assessment and option selection
• Comparative Assessment preparation studies and co-ordination of Comparative Assessment
• Stakeholder Engagement.

Execution:
• Ongoing support for the planning and execution of future decommissioning operations
• Controls and monitoring reconfiguration engineering and management
• Transition support for operations and maintenance model
• Delivery of additional technical supporting documentation, including the following:
• Pipeline burial status review
• Burial equipment study
• Corrosion and long-term protection assessment
• Flushing and conditioning philosophies for subsea and topside infrastructure
• Controls and monitoring
• Structural integrity review of topsides and jackets
• Isolation and disconnection
• Scope of work preparation and Safety case modifications
• Discipline Engineering and Contractor Management
• W2W campaign management
• Platform and Subsea facilities removal management.